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The document discusses several key factors that influence the selection of mining methods for underground metal ore deposits: 1. The strength of the ore and surrounding rockmass is assessed using classification systems like RMR and Q, which determine ground support needs and excavation stability. 2. The depth of mineralization, surface conditions, and in-situ rock stresses influence whether open pit or underground mining is suitable. 3. The geotechnical environment, including rockmass properties, fault
- Author
- Michael Altamirano
- Language
- EN